1st Appearance of Nebula#31 in this year’s Top 50.Angelo notes: A 9.6 CGC variant sold in September 2018 for $255. Nebula seems to be gearing up for more exposure in the MCU.Doug notes: First appearance of NEBULA; Karen Gillan playing NEBULA in the GUARDIANS of the GALAXY #1 Movie; A CGC 9.0 variant sold at dougcomicworld.com in 2018 for $79.